* {
    margin: 0;
    padding: 0;
}

body {
    background-color: #ededed;
    color: #666;
    font-size: 14px;
}
.ctn{
    min-width: 1276px;
    margin: 0;
    /* overflow: hidden; */
}
ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
    overflow: hidden;
}
h6{
    text-align: center;
    color: #8b8b8b;
    font-size: 18px;
    margin: 20px 0 0;
    font-family: Smartisan Maquette,FZYouHJW;
}
h4{
    width: 386px;
    margin: 0;
    float: left;
    padding: 35px 0 0 20px;
    font-size: 20px;
    color: #424242;
    font-family: SmartisanMaquette,FZYouHJW300;
}
h3{
    font-size: 48px;
    line-height: 48px;
    margin: 0 0 40px 0;
    text-align: center;
    font-family: Smartisan Maquette,FZYouHJW;
    font-weight: 300;
    color: #323232;
}
h2{
    color: #323232;
    line-height: 36px;
    margin: 50px 0 30px;
    text-align: center;
    font-size: 36px;
    font-weight: 300;
    font-family: Smartisan Maquette,FZYouHJW;
}
h1{
    color: #cdcdcd;
    line-height: 50px;
    margin: 50px 0 23px;
    text-align: center;
    font-size: 50px;
    font-weight: 300;
    font-family: Smartisan Maquette,FZYouHJW;
}
p{
    font-size: 18px;
    margin: 0 auto;
    color: #999;
    line-height: 30px;
    font-family: Smartisan Maquette,FZYouHJW;
}
/* 导航条 */
nav {
    border-radius: 0;
    height: 100px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: url(../images/bg-carbonblack.png) center bottom repeat-x;
}
.navbar-container {
    height: 100%;
    width: 100%;
}

/* 导航选项 */
.navbar-words {
    height: 100%;
    display: flex;
    list-style-type: none;
    justify-content: center;
    align-items: center;
    margin: 0;
    padding: 0;
}

.navbar-words>li {
    padding: 0 20px;
}
.navbar-words>li>a {
    color: #666;
    text-decoration: none;
    font-size: 14px;
    cursor: pointer;
    transition: all .15s ease-out;
    width: 100%;
}
.normalup>li>a {
    color: #b7b0ab;
}
.navbar-words>li.activeup>a{
    font-family: PingFang SC;
    font-weight: 700;
    color: #cccccc;
}
.navbar-words>li.activeup1>a{
    font-family: PingFang SC;
    font-weight: 700;
    color: #cccccc;
}

.navbar-words>li.activeup2>a{
    font-family: PingFang SC;
    font-weight: 700;
    color: #71635a;
}
.navbar-words>li.activeup3>a{
    font-family: PingFang SC;
    font-weight: 700;
    color: #71635a;
}
/* logo */
.navbar-words>li.logo {
    margin: 0 20px 0 0;
    padding-left: 0;
}
.logo>a{
    overflow: hidden;
    display: block;
}
.logo>a>img{
    width: 40px;
    height: 40px;
}
/* 登录，购物车 */
.login,.shopcart {
    width: 18px;
    font-size: 18px !important;
    line-height: 18px !important;
    box-sizing: content-box;
    color: #999999;
}
.login {
    padding: 0 0 0 40px !important;
    margin-left: 40px;
    border-left: 1px solid #666;
}
.shopcart {
    padding: 0 !important;
    margin-right: 0px;
}
/* 导航栏2 */
.main-title {
    height: 40px;
    width: 100%;
    line-height: 40px;
    background: url(../images/bg-sub-carbonblack.png) repeat-x;
    box-shadow: 0 4px 10px 0 rgb(0 0 0 / 5%);
    position: sticky;
    top: 0;
    background-color: #fff;
}
.gzz{
    float: left;
    display: none;
    margin-right: 30px;
}
.gzz>a{
    font-size: 20px;
    font-weight: 400;
    text-decoration: none;
    color: #666666;
}
.normaldown>.gzz>a{
    color: #b7b0ab;
}
.normaldown>ul>li>a{
    color: #b7b0ab;
}
.title-item {
    margin: 0;
    float: left;
}
.title-item>li {
    float: left;
    margin : 0 15px;
    font-size: 12px;
}
.title-item>li:first-child {
    margin-left: 0;
}
.title-item>li>a {
    color: #666;
    text-decoration: none;
    cursor: pointer;
    transition: all .15s ease-out;
}
.title-item>li.activedown>a {
    color: #cccccc;
    font-weight: 700;
}
.title-item>li.activedown1>a {
    color: #cccccc;
    font-weight: 700;
}
.title-item>li.activedown2>a {
    color: #71635a;
    font-weight: 700;
}
.title-item>li.activedown3>a {
    color: #71635a;
    font-weight: 700;
}
/* 中间内容 */
article{
    margin: 0 auto;
    max-width: 2560px;
}
article>div:first-child{
    height: 1440px;
    background: url(../images/overview-top.jpg) top center no-repeat;
    background-size: cover;
}
article>div:nth-child(2){
    height: 1440px;
    background: url(../images/overview-feature.jpg) top center no-repeat;
    background-size: cover;
}
article>div:nth-child(3){
    height: 1440px;
    background: url(../images/overview-design.jpg) top center no-repeat;
    background-size: cover;
}
article>div:last-child{
    height: 1440px;
    background: url(../images/overview-os.jpg) top center no-repeat;
    background-size: cover;
}

/* 第二页样式 */
main{
    display: none;
    max-width: 2537px;
    margin: 0 auto;
}
main ul{
    width: 426px;
    margin: 50px auto 0;
}
main ul>li{
    float: left;
    margin: 0 32px;
}
main ul>li>img{
    width: 64px;
    height: 64px;
}
main>section>img{
    display: block;
    margin: 50px auto;
}
.jieshaotu{
    margin: 50px auto;
}
main>section{
    background-color: rgb(255, 255, 255);
    padding: 100px 0;
}
main>section:nth-of-type(6),section:last-of-type{
    padding-bottom: 0;
}
main>section:nth-of-type(6)>h3{
    color: #9d9d9d;
}
main>section:nth-of-type(6) p{
    color: #6e6e6e;
}
main>section:not(:first-child) p{
    margin-top: 16px;
    line-height: 21px;
    text-align: center;
}
main>section:not(:first-child) p:first-of-type{
    margin-top: 0;
}
main>section:first-child{
    height: 2095px;
    background: url(../images/top-tnt.jpg) top center no-repeat;
    background-size: cover;
    padding-top: 100px;
}
main>section:first-child>figure{
    width: 300px;
    height: 300px;
    margin: 0 auto;
    background: url(../images/os-logo.png) top center no-repeat;
}
main>section:first-child p{
    width: 865px;
    color: #666666;
}
main>section:first-child>div>img{
    display: block;
    margin: 57px auto 0;
    cursor: pointer;
}
main>section:nth-of-type(2){
    padding: 50px 0 100px;
}
main>section:nth-of-type(6){
    height: 1290px;
    background: url(../images/tnt-os-office.jpg) top center no-repeat;
    background-size: cover;
}
main>section:nth-of-type(7)>div:first-child{
    height: 128px;
    width: 128px;
    background: url(../images/trinity_word.png) top center no-repeat;
    background-size: cover;
}
main>section:nth-of-type(8)>div:first-child{
    height: 128px;
    width: 128px;
    background: url(../images/trinity_ppt.png) top center no-repeat;
    background-size: cover;
}
main>section:nth-of-type(9)>div:first-child{
    height: 128px;
    width: 128px;
    background: url(../images/trinity_excel.png) top center no-repeat;
    background-size: cover;
}
main>section:nth-of-type(10)>div:first-child{
    height: 128px;
    width: 128px;
    background: url(../images/bulletMessage.png) top center no-repeat;
    background-size: cover;
}
main .tan{
    display: flex;
    height: 100%;
    justify-content: center;
    align-items: center;
    margin-top: 33px;
}
.tan>a{
    margin: 0 20px;
    font-size: 14px;
    color: rgba(0,0,0,.6);
    text-decoration: none;
}
main .TV{
    width: 1006px;
    height: 786px;
    margin: 50px auto 0;
    background: url(../images/trinity-bg.png) top center no-repeat;
    background-size: cover;
    padding-top: 40px;
}
main .TV>img,video{
    width: 926px;
    height: 523px;
    margin-top: 0;
    margin-left: 40px;
}
main>section>div>img{
    display: block;
    margin: 50px auto 0;
}
.slt{
    margin: 0 auto;
}



/* 第三页样式 */
.three{
    display: none;
    background-color: rgb(255, 255, 255);
}
.three>div:first-child{
    height: 739px;
    background: url(../images/TOP-web.jpg) top center no-repeat;
    background-size: cover;
    max-width: 2538px;
    margin: 0 auto;
}
.three ul{
    width: 1240px;
    margin: 100px auto 0;
    border-top: 1px solid rgba(0,0,0,.08);
}
.three ul li{
    overflow: hidden;
}
.shuoming{
    width: 854px;
    float: left;
    padding: 35px 0 40px 0;
}
.flx{
    display: flex;
    height: 100%;
    justify-content: left;
}
.flx>div:not(:last-child){
    margin-right: 30px;
}
.three p{
    font-size: 14px;
    font-weight: 300;
    color: #424242;
    font-family: SmartisanMaquette,FZYouHJW300;
}
.three>ul>li:last-child div{
    padding: 34px 0 34px 20px;
}
.three>ul>li:last-child p{
    margin: 0;
    font-size: 12px;
    color: #757575;
    line-height: 24px;
}
.three>ul>li:nth-child(2) p{
    width: 397px;
}
.three>ul>li:nth-child(5) p{
    width: 240px;
}
.three>ul>li:last-child p:last-child{
    padding-left: 23px;
}
.three>ul>li>div{
    width: 854px;
}
.three>ul>li:not(:last-child)>div{
    border-bottom: 1px solid rgba(0,0,0,.08);
}
.three .tittle{
    line-height: 36px;
    font-weight: 700;
}
.three .zhuanzhoutu{
    width: 854px;
    height: 250px;
    margin: 50px 0 30px;
    background: url(../images/spec-spindle.png) no-repeat;
}
.three .anjiantu{
    width: 854px;
    height: 1546px;
    margin: 44px 0 30px 0;
    background: url(../images/spec-interface.png) no-repeat;
}
.three .chicuntu{
    width: 854px;
    height: 459px;
    margin: 49px 0 30px 0;
    background: url(../images/spec-size.png) no-repeat;
}
footer {
    background: #fafafa;
    border-top: 1px solid #e6e6e6;
    /* height: 21.125rem; */
  }
  footer ul {
    list-style: none;
  }
  footer ul li {
    float: left;
    margin-right: 90px;
    line-height: 1;
  }
  footer ul li h3 {
    color: #646464;
    font-weight: 700;
    font-size: 12px;
    padding: 0 0 20px;
  }

  footer ul li div a {
    display: block;
    color: #969696;
    font-size: 12px;
    padding: 7px 0;
    text-decoration: none;
  }
  footer ul li div a:hover {
    color: blue;
  }
  footer .footer-service {
    position: absolute;
    right: 0;
    overflow: hidden;
    line-height: 34px;
    text-align: right;
  }
  footer .footer-service h1 {
    position: relative;
    font-size: 18px;
    font-weight: 900;
    line-height: 1;
    cursor: default;
    color: #5079d9;
  }
  footer .footer-service h2 {
    margin-top: 15px;
    font-size: 12px;
    line-height: 1;
    color: #999;
    font-weight: 400;
  }
  footer .footer-service .online {
    float: right;
    top: 15px;
  }
  footer .footer-service .online a {
    display: block;
    width: 132px;
    height: 30px;
    line-height: 30px;
    background: linear-gradient(#fcfcfc, #f5f5f5);
    cursor: pointer;
    font-weight: 700;
    margin-top: 15px;
    text-align: center;
    color: #5079d9;
    border: 1px solid #d0d0d0;
    border-radius: 5px;
    box-sizing: border-box;
  }
  footer .footer-service .online a::before {
    content: "?";
    font-size: 14px;
    display: inline-block;
    vertical-align: top;
    width: 28px;
    height: 28px;
    margin-right: -2px;
    line-height: 28px;
    background: #5079d9;
    color: #fff;
    border-radius: 50%;
    transform: scale(0.45);
    font-size: 16px;
    font-weight: 400;
  }
  footer .footer-service .online span {
    font-size: 12px;
    height: 28px;
    line-height: 28px;
    vertical-align: top;
    display: inline-block;
  }
  footer .footer-service .online a {
    font-size: 0;
  }
  footer > .footer-wrapper {
    width: 1220px;
    margin: 0 auto;
    padding: 0 10px;
    box-sizing: border-box;
  }
  footer > .footer-wrapper > .footer-menu {
    position: relative;
    overflow: hidden;
    padding: 20px 0 55px;
    border-bottom: 1px solid #e6e6e6;
  }
  .footer-info {
    color: #434d55;
    font-size: 12px;
    padding: 30px 0 60px;
  }
  .footer-info ul {
    overflow: hidden;
  }
  .footer-info li {
    margin-right: 0;
    padding: 0 10px;
    border-left: 1px solid #ccc;
  }
  .footer-info li:nth-child(1) {
    padding-left: 0;
    border-left: 0;
    color: #bdbdbd;
  }
  .footer-info li a {
    text-decoration: none;
    color: #bdbdbd;
  }
  .footer-info li a:hover {
    color: blue;
  }
  .footer-info .icp {
    margin-top: 10px;
    cursor: pointer;
  }
  .footer-info .icp span {
    display: inline-block;
    line-height: 12px;
    padding-right: 10px;
    color: #bdbdbd;
    cursor: pointer;
    border-left: 1px solid #ccc;
    padding: 0 10px;
  }
  .footer-info .icp span:hover {
    color: blue;
  }
  .footer-info .icp span:nth-child(1) {
    border-left: 0;
    padding-left: 0;
  }
  .footer-info .icp span:nth-child(2) {
    position: relative;
    padding-left: 35px;
  }
  .footer-info .icp span:nth-child(2)::before {
    position: absolute;
    content: "";
    top: -5px;
    left: 10px;
    width: 20px;
    height: 20px;
    background: url(../images/icon.png) no-repeat;
    background-size: 20px;
  }